Variable supercharging using cvt
- 1. By Prabhakar J SNS COLLEGE OF TECHNOLOGY (AUTONOUMOUS)
- 2. Need of downsizing engines Reduce co2 emissions Reduce fuel consumption Ways to increase power Turbocharging supercharging
- 3. Turbocharger It is a centrifugal compressor driven by exhaust gas of engine. It produces high boost at high engine speed. Disadvantages At low speed turbo lag occurs.
- 5. supercharger It is mechanical air pump driven by engine. It produce good boost at low speed. Disadvantages At high speed some boost pressure is wasted
- 7. What is variable supercharger? It is a gearless fully variable pressure charger. It is driven by the electronically actuated continuously variable transmission belt and pulley.
- 9. Function of variable supercharger It delivers right amount of boost at right time. At low speed it produces high boost. At high speed work of engine is conserved to produce correct amount of boost pressure.
- 10. Control The supercharger works with the signals from electronic control unit. Sensors used 1. MAP sensor 2. MAF sensor 3. O2 sensor 4. Throttle position sensor 5. CKP,CMP sensor 6. Accelerator pedal sensor
- 11. Advantages It has both the advantages of turbocharger and supercharger High volumetric and thermal efficiency. low emission. Good working at all conditions
- 12. Disadvantages Slightly High cost Complex operation
- 13. Thank you